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 Llama 4 MaverickMeta |  GPT-5.5OpenAI |  Gemini 2.5 Pro | o3 OpenAI | |
|---|---|---|---|---|
| Vendor | Meta | OpenAI | OpenAI | |
| Family | Llama | GPT | Gemini | o-series |
| Release date | 2025-04-05 | 2026-04-23 | 2025-03-25 | 2025-04-16 |
| Context window | 1,000,000 tokens | 400,000 tokens | 2,000,000 tokens | 200,000 tokens |
| Parameters | 400B | — | — | — |
| Modality | text, vision | text, vision, audio | text, vision, audio, video | text, vision |
| License | Llama 4 Community License | proprietary | proprietary | proprietary |
| Source | open weights | proprietary | proprietary | proprietary |
| Description | Mixture-of-experts open-weight model from Meta. | OpenAI's smartest and most intuitive model — successor to GPT-5, with major coding, research, and document workflow gains. GPT-5.5 Pro variant also available for heavier reasoning. | Predecessor to Gemini 3 Pro. | Reasoning-focused model in the o-series. |
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